package com.lyx.shiro.realm;

import com.lyx.shiro.entity.User;
import com.lyx.shiro.service.UserService;
import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.AuthenticationInfo;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authc.SimpleAuthenticationInfo;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.authz.SimpleAuthorizationInfo;
import org.apache.shiro.realm.AuthenticatingRealm;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;
import org.apache.shiro.util.ByteSource;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import java.util.List;

/**
 * @author LiuYunXin
 * @create 2022-12-25-12:46
 */
@Component
public class MyRealm extends AuthorizingRealm {

    @Autowired
    UserService userService;

    // 自定义授权方法
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
        System.out.println("进入自定义授权方法");
        //获取当前用户身份信息
        String principal =
                principalCollection.getPrimaryPrincipal().toString();
        //调用接口方法获取用户的角色信息
        List<String> roles = userService.getUserRoleInfo(principal);
        System.out.println("当前用户角色信息："+roles);
        //调用接口方法获取用户角色的权限信息
        List<String> permissions =
                userService.getUserPermissionInfo(roles);
        System.out.println("当前用户权限信息："+permissions);
        //创建对象，存储当前登录的用户的权限和角色
        SimpleAuthorizationInfo info = new SimpleAuthorizationInfo();
        //存储角色
        info.addRoles(roles);
        //存储权限信息
        info.addStringPermissions(permissions);
        //返回
        return info;
    }

    // 自定义登录认证方法
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
        //1获取用户身份信息
        String name = token.getPrincipal().toString();
        System.out.println("-------------"+name);
        //2调用业务层获取用户信息（数据库表中）
        User user = userService.getUserInfoByName(name);
        //3非空判断，将数据完成封装
        if(user != null){
            AuthenticationInfo info = new SimpleAuthenticationInfo(
                    token.getPrincipal(),
                    user.getPwd(),
                    ByteSource.Util.bytes("salt"),
                    name
            );
            return info;
        }
        return null;
    }
}
